Door opening mechanism with automatic adjustment of the door opening latch

A remote-actuable door opener for installation in a door having a preferably positionally fixed door frame and having a door leaf movably mounted thereon,

• having a movable door opener catch and having an actuating device including a remote-actuable blocking device which interacts directly or indirectly with the door opener catch in such a way that the door opener catch can be switched into a blocking position and into a release position,
• with it being possible for the door opener to be mounted on the door frame or on the door leaf, and with the door leaf or the door frame respectively having a lock catch,
• wherein the actuating device automatically sets the door opener catch into a position in which the door opener catch abuts against the lock catch in a closed position of the door,
• wherein at least one of the door opener catch or a catch body, which is movable on a bearing body, of the door opener catch interacts with a drive output element of at least one of the actuating device or a blocking unit via a ratchet mechanism which can be controlled by means of at least one of an electromechanical motor unit or an electric lifting magnet unit.